Means of combined telephonic and telegraphic transmission.



PUB. DELANY.

MEANS OF COMBINED TELEPHONIC AND TELEGRAPHIC TRANSMISSION. APPLICATION FILED MAR. 17, 1911.

1,137,193., Patented Apr. 27, 1915.

PATRICK B. DELANY, OF SOUTH ORANGE, NEW JERSEY.

MEANS OF C OMBINED TELEPI-IONIG AND TELEGRAPHIC TRANSMISSION.

Specification of Letters Patent.

Patented Apr. 2?, 1%15.

Application filed March 17, 191 1. Serial No. 614,990.

To all whom it may concern:

Be it known that I, PATRICK B. DELANY, a citizen of the United States of America, residing in South Orange, county of Essex, and State of New Jersey, have invented certain new and' useful Improved Means of Combined Telephonic and Telegraphic Transmission, of which the following is a' specification.

This invention provides for the production of dot and dash code signals over an ordinary telephone line by reason of'shocks or jars imparted by an electro-magnetic buzzer to a telephonic transmitter thus correspondingly disturbing its closed transmitting contacts. Alternately with such a system of Morse transmission, or'simultaneously therewith, telephonic conversation may be carried on over the same circuit.

In the accompanying drawing; Figure l shows an'arrangement in which an electrically operated buzzer under the control of a Morse key is mounted in mechanical contact with the base of a desk telephone; and Fig. 2' illustratesa modified arrangement of the buzzer.

"The use of a buzzer has the advantage that instead of the delivery of ablow upon the support of the microphone, the buzzer will maintain its vibration as long as the key is closed and send a sustained note over the telephone circuit thereby-insuring perhaps more definition of received signals. Such a buzzer maybe inclosed within the base of an ordinarydesk telephone as indicated. In Fig. 2 the primary circuit 7) including the telephone contacts 3 of an ordinary desk transmitter is closed and the buzzer 2 located in the base of the trans mitter is in a normally open battery circuit including a Morse key. The local batteries are marked Z I) and s isthe secondary of the induction coil. In the arrangement shown in Fig. 1, the buzzer is in a local circuit that may be closed and opened by a two point switch, and the Morse key is in the primary of the induction coil. Normally the primary will be closed by a switch shunting the Morse key. When Morse transmission by means of the buzzer is to be effected the' switch that normally closes the primary is opened and the local circuit of the buzzer closed.

I claim:

1. In a system of combined telegraphy and telephony, the combination of a microphone transmitter, its holder, circuit and battery connections, an automatic inter-' rupter inclosed in said holder, a telegraph 1 key and circuit connections therefrom to said interrupter whereby telegraphic sig nals may be mechanically transmitted to the microphone transmitter by said'interf upter for transmission over the telephone inc. 2. In a system of combined telegraphy and telephony, the combination of a microphone transmitter, a desk-stand holder for said transmitter, circuit and battery connections, an automatic interrupter inclosed in said holder, a telegraph key and circuit connections therefrom to said interrupter whereby telegraphic signals may be mechanically transmitted to the microphone transmitter by said interrupter for transmission over the telephone line.

3. In a system of combined telegraphy and telephony, the combination of a microphone transmitter, its holder, an automatic buzzer inclosed in said holder and transmitting vibrations to said microphone by means of said holder, battery and circuit connections for the buzzer and microphone, and a telegraph transmitter controlling the transmission of telegraphic signals over the telephone line.

4. In a system of combined telegraphy and telephony, the combination of a micro phone transmitter, its holder, an automatic buzzer inclosed in said holder and transmitting vibrations to said microphone by means of said holder, battery and circuit connec; tions for the buzzer and microphone, and a telegraph transmitter for controlling the transmission of a series of dot and dash impulses generated by the buzzer.

In testimony whereof, I have hereunto subscribed my name.

PATRICK B. DELANY. Witnesses:

CHAS. E. Pnunms, C. A. AUER. 

